Heat-radiating unit.



J. McE. BOWMAN.

HEAT RADIATING UNIT,

APPLICATION FILED FEB-16, I916.

1 ,205,703. I Patented Nov. 21, 1916.

WITNESSES IIVVENTOI? A TTORNEVS NTT ST JOHN MCENTEE BOWMAN, OF NEW YORK,N. Y.

HEAT-RADIATING UNIT.

mosses.

Specification of Letters Patent.

Patented Nov. 21, 1916.

Application filed February 16, 1916. Serial No. 78,663.

To all whom it may concern.

Be it known that 1, JOHN MOE. BOWMAN, a citizen of the United States,and a resident of the city of New York, borough of Manhattan, in thecounty and State of New York, have invented a new and ImprovedHeat-Radiating Unit, of which the following is a full, clear, and exactdescription.

Among the principal objects which the present invention hasin view are;to prevent the freezing of the water employed as the heating medium inhot-water radiators; to provide means for maintaining continuously acirculation of the heating medium in the vicinity of the radiator formaintaining the temperature of the air surrounding the radiator abovethe freezing point; and to continuously maintain a limited circulationof the heating medium in the supply and delivery radials immediatelyconnected with the radiators of the heating system.

Drawinga-Figure 1 is a side elevation of a radiator constructed andarranged in accordance with the present invention; Fig. 2 is a top planview of the same; Fig. 3 is a detail view on an enlarged scale, showingin section a choking connection for the circulation bypass with whichradiators constructed in accordance with the present invention areprovided.

Descm'ptz'0n.ln domestic heating installations employing hot water asthe heating medium, an inconvenience is experienced as the result ofcarelessness on the part of attendants or other persons using thesystem, and as the direct result of turning off the supply valve inorder to reduce the heat of the room in which the radiator is installed.

Radiators are generally placed adjacent to window openings. When, asoften happens, in addition to suspending the supply of heat, theoccupant of a room raises the window to more rapidly reduce thetemperature of the room and thereafter neglects to lower the window orto turn on the supply of heating medium before leaving the room, thewater in the radiator freezes. The freezing of the water in the radiatoroperates to burst the columns or to expand the connections so that whensubsequently the medium in the radiator is thawed, a flooding conditionimmediately results.

T o obviate the above stated difliculty, the present invention providesan auxiliary circulating pipe 8. The pipe 8 is preferably disposed atthe rear of the columns of the radiator .9, intermediate and in theplane with the supply radial 10 and the delivery radial 11. Therelatively long radials 10 and 11 are conventional. These radials areconnected with the riser 12 and the downpipe 13, respectively, and tothe ends of the radiator 9 farthest removed from the said riser anddownpipe, as shown in the drawings.

The auxiliary circulating pipe 8 operatively connects the radials 10 and11, being connected therewith by the pipe T-couplmgs 14 and 15, whichcouplings are disposed between the said radials and the inlet and outletvalves 16 and 17, respectively. Consequent upon this arrangement, theheating medium continuously flows from the radial 10 to the radial 11,by way of the pipe 8, irrespective of the condition of the valves 16 and17.

To limit the flow of the heating medium through the pipe 8, a chokenipple 18 is interposed between the T-coupling 1d and the short riser 19connecting the pipe 8 and the T-coupling 14, as shown best in Fig. 3 ofthe drawings, the nipple 18 has a contracted passage 20, which permits alimited supply of medium to pass to the pipe 8. The delivery end of thepipe 8 is free.

It is obvious that when thus constructed, trapping of the medium in theradial 10 is prevented, for though the valve 16 may be closed, themedium continues to flow through the nipple 18 to the short riser 19 andauxiliary pipe 8 and radial 11, and thence to the down pipe 13. Thecirculation thus maintained is suflicient to continuously furnish alimited supply of heat, which While not sufficient to incommode theoccupant of the room, prevents the freezing of the medium in either theradial 10 or the radiator 9, when subject to the conditions aboveoutlined as usually producing these objectionable results.

Claims:

1. The combination of a radiator; a supply pipe; a delivery pipe; asupply radial operatively connecting said supply pipe and said radiator,said'supply radial being disposed in parallel juxtaposed relation tosaid radiator, and extending lengthwise of said radiator for connectionat the far end thereof; means controlling the supply of medium to saidradiator, said means embodying a manually operative valve intermediatesaid supply radial and said radiator; and an auxiliary circulatingmember permanently connecting said supply radial and said delivery pipe,said member being disposed in parallel juxtaposed relation to saidradiator and equidistant from said radial and delivery pipe, theconnection of said auxiliary circulating member with said supply radialbeing intermediate said supply pipe and said valve.

2. The combination of a radiator; a supply pipe; a delivery pipe; asupply radial operatively connecting said supply pipe and said radiator,said supply radial being disposed in parallel juxtaposed relation tosaid radiator, and extending lengthwise of said radiator for connectionat the far end thereof; means controlling the supply of medium to saidradiator, said means embodying a manually operative valve intermediatesaid supply radial and said radiator; an

auxiliary circulating member operatively connecting said supply radialand said delivery pipe, said member being disposed in paralleljuxtaposed relation to said radiator and equidistant from said radialand delivery pipe, the connection of said auxiliary circulating memberwith said supply pipe being intermediate said supply pipe and JOHNMOENTEE BOWMAN.

Witnesses:

FREDERICK W. FALLBUSCH, WALTER MORAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. C.

